Analysis of abnormal surface color of tungsten infiltrated copper throat lining
LIN Bingtao1，WANG Xiangyu2，ZHOU Zixiang3，GUO Yingli1，TANG Liangliang1，
SUN Xiaoxia4
（1. Advanced Technology & Materials Co. Ltd, Beijing 100081, China; 2.Hubei Institute of Aerospace Chemical
Technology, Xiangyang 441001, China; 3. General Design Institute, Hubei Aerospace Technology Research
Academy, Wuhan 430040, China; 4. China University of Labor Relations, Beijing 100048, China）
Abstract：Aiming at the phenomenon of abnormal color on the surface of throat lining products processed by
W-7Cu infiltrated with tungsten and copper, two samples of raw material bar residue and throat lining with abnor‐
mal color were selected, and the physical properties, nondestructive testing, metallographic structure, mechanical
properties and micro-morphology of the samples were compared and analyzed. The results show that there is no
obvious or essential abnormality between them, which excludes the possibility of color abnormality caused by
materials. Processing is also an important factor affecting the product structure and performance. Therefore, the
process parameters of rotating speed of 700~800 r/min, front angle of cutting tool of 0°~6 °and back angle of 0°~8°
are redesigned. The overall color of the processed new product is bright and there is no abnormality, which pro‐
vides corresponding reference for the subsequent preparation and quality control of tungsten-infiltrated copper
throat liner.
2022, Vol. 32 
